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Finding the Fourth Proportional to 352,312.31, 528,467.04 and 127,620.16

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Solution

The fourth proportional to 352,312.31, 528,467.04 and 127,620.16 is: 191,429.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,312.31 : 528,467.04 = 127,620.16 : x
  2. Step 2: Convert to fraction form
    352,312.31/528,467.04 = 127,620.16/x
  3. Step 3: Cross multiply
    352,312.31x = 528,467.04 × 127,620.16
  4. Step 4: Simplify right side
    352,312.31x = 67,443,046,878.36
  5. Step 5: Solve for x
    x = 67,443,046,878.36/352,312.31
  6. Step 6: Final answer
    x = 191,429.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.